Definition

1. Noun:
   • A shaking or vibration of the ground: This is the primary meaning, referring to the sudden, sometimes violent, movement of the Earth's surface caused by the release of energy from geological forces, such as movement along a fault or volcanic activity.
   • A severely disruptive event or upheaval: Used metaphorically to describe an event that causes a major disturbance or shock within a system, organization, or society.

Usage and Examples

• Literal Meaning (Geological Event):
  • The powerful earthquake damaged buildings across the city.
  • Scientists are studying ways to predict earthquakes more accurately.
• Figurative Meaning (Major Disruption):
  • The sudden policy change sent an earthquake through the financial markets.
  • The scandal was a political earthquake that reshaped the entire government.

Advanced Usage

• "to trigger/cause an earthquake": to be the direct cause of a seismic event or a major disturbance.
  • The reservoir's construction is feared to trigger an earthquake in the geologically sensitive region.
  • The CEO's resignation caused an earthquake in the corporate world.
• "earthquake-prone/earthquake zone": an area where earthquakes are frequent or likely to occur.
  • Japan is an earthquake-prone country with advanced building codes.

Variants and Related Words

• Seismic (adj): Relating to or caused by an earthquake or earth vibration.
  • The region has high seismic activity.
• Tremor (n): A slight earthquake, or a shaking or vibrating movement.
  • A small tremor was felt just before the major quake.
• Aftershock (n): A smaller earthquake following the main shock of a larger earthquake.
  • The city experienced several aftershocks in the days following the initial earthquake.
• Foreshock (n): A minor tremor that precedes a larger earthquake.

Synonyms

• Quake: A common informal synonym for earthquake.
  • The quake measured 6.5 on the Richter scale.
• Temblor: A less common, more technical term for an earthquake.
• Seism: A technical term used in geology and seismology.
• Upheaval: A synonym for the figurative meaning, indicating a violent or sudden change or disruption.
  • The merger caused a major upheaval in the industry.

Related Phrases and Collocations

• Earthquake magnitude: A measure of the energy released by an earthquake (e.g., on the Richter scale).
• Earthquake epicenter: The point on the Earth's surface directly above the focus (hypocenter) of an earthquake.
• Earthquake-resistant/quake-proof: Designed to withstand the forces of an earthquake.
  • All new hospitals must be earthquake-resistant.
• Earthquake relief/aid: Assistance provided to the victims of an earthquake.

Idioms and Figurative Use

• Social/political/cultural earthquake: Describes an event that causes a fundamental and disruptive shift in society, politics, or culture.
  • The invention of the internet was a cultural earthquake.
• To weather the earthquake: To survive a major crisis or disruption.
  • The company managed to weather the economic earthquake and emerge stronger.

Noun

1. a disturbance that is extremely disruptive
   • selling the company caused an earthquake among the employees
2. shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity